Tools › TI Work Letter
Free Tool
TI work letter (build-out) calculator.
When you ask for build-out above the landlord’s allowance, they don’t give it away — they amortize it back into your rent. See exactly how much a tenant-improvement package adds to your rate per square foot over the term.
$/SF
SF
yrs
%
Added rent to amortize TI
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Total TI amortized
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Added annual rent
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Added monthly rent
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Landlords amortize over-standard TI into rent like a loan — principal (the build-out cost above the allowance) plus interest, spread across the lease term. The rate is negotiable; a shorter term or higher rate means a bigger rent bump. This is the added rent on top of your base — negotiate the allowance up and this shrinks.
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Estimates are for planning only and use simplified assumptions — not tax, legal, or investment advice. Verify with your lender, CPA, and a full broker analysis before acting.